Hi @pkstockfedd. Welcome to GoDaddy Community! Once you set up your cPanel account, it should add the domain to your DNS hosting by default. You shouldn't need to add it separately. If you have the domain hosted on cPanel but don't see it in your domain manager, please connect with our customer care team so they can take a look at what's going on.
JesseW - GoDaddy | Community Manager | 24/7 support available at x.co/247support | Remember to choose a solution and give kudos.